Problem with Dynamic Cube Map - GameCreators Forum

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Diablo 3D

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Posted: 11th Jul 2013 16:51

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Hi guys

Got a problem with Dynamic Cube Maps. When I run this code:

+ Code Snippet

sync on
sync rate 0

make object cube 1, 100

Make Dynamic Cube Map 1, 128

Do
    hide object 1
    Render Dynamic Cube Map 1, 1, Camera Position X(), Camera Position Y(), Camera Position Z()
    show object 1
    sync mask %001
Sync
Loop

I get this (see attached image).

I've removed all non-essential code from my game in order to make this run.

I've exported a sample from Dark Shader which has dynamic cube maps, and it works fine, but as soon as I copy the code into another program, it messes up...

Any ideas what's going on?

Self Destruction Computer Entertainment

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JackDawson

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Posted: 12th Jul 2013 00:20

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I believe its the same problem here too..

http://forum.thegamecreators.com/?m=forum_view&t=197929&b=1

https://soundcloud.com/toraktu

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Green Gandalf

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Posted: 12th Jul 2013 02:26

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This works - as in the Dark Shader example you thought you were using. Too late to elaborate now.

+ Code Snippet

sync on
sync rate 0

make object cube 1, 100

Make Dynamic Cube Map 1, 128

Do
    hide object 1
    Render Dynamic Cube Map 1, -1, Camera Position X(), Camera Position Y(), Camera Position Z()
    show object 1
    sync mask %001
Sync
Loop

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Diablo 3D

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Posted: 12th Jul 2013 12:25

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Hi Jack

I've read through that forum, but it doesn't address why I get that error message.

I've tried everything I can think of, even commenting out this line of code:

+ Code Snippet

Render Dynamic Cube Map 1, -1, Camera Position X(), Camera Position Y(), Camera Position Z()

As soon as it tries to run this code, it crashes.

Self Destruction Computer Entertainment

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Green Gandalf

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Posted: 12th Jul 2013 17:01

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Could you post the code that works for you - there might be a clue there when we compare the two.

In the meantime you could try putting the following at the top of your code - it's needed by some Dark Shader commands whenever there's a screen mode change (and certain project settings seem to trigger that):

+ Code Snippet

reload display pointer

If I recall correctly you'll need that every time you use set display mode as well.

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JackDawson

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Posted: 12th Jul 2013 17:28

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I am starting to think its a problem with DBPro itself when it comes to that command "Dynamic Cube Map". Bug maybe ?

https://soundcloud.com/toraktu

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Green Gandalf

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Posted: 12th Jul 2013 17:36

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What's the problem exactly?

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JackDawson

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Posted: 13th Jul 2013 16:00

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Quote: "What's the problem exactly?"

The problem is that it crashes your program when you try to use that command. I myself have had this exact problem. I pointed out another link in an earlier post to explain that this is an unsolved problem.

https://soundcloud.com/toraktu

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Green Gandalf

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Posted: 13th Jul 2013 18:33

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I saw that thread and wasn't sure what the problem was in this case. I need to see code. Could you be specific?

Quote: "The problem is that it crashes your program when you try to use that command."

Yes I know it crashes in some circumstances but as I said before it doesn't crash for me when it's used properly. So, as usual, code pleae.

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JackDawson

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Posted: 13th Jul 2013 18:41 Edited at: 13th Jul 2013 18:55

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Quote: "So, as usual, code pleae."

He has already posted the code.. Its in the first post of this thread.

https://soundcloud.com/toraktu

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Green Gandalf

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Posted: 13th Jul 2013 18:49

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And I've already corrected it and as I implied before I need to see the whole project and he hasn't replied:

Quote: "(and certain project settings seem to trigger that):
"

Just get on with it and post a complete short project. Then we can make progress on this. Do I really have to spell out every little detail for a simple request such as this?

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JackDawson

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Posted: 13th Jul 2013 18:56 Edited at: 13th Jul 2013 18:58

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The problem here is there is no information on this command. And I see in your code you change from a 1 to a -1 like so :

+ Code Snippet

Render Dynamic Cube Map 1, -1, Camera Position X(), Camera Position Y(), Camera Position Z()

But what is that ? Where can I see full documentation on this. There is nothing in the HELP file of DBPro.

And yes, I tried it with your code, it comes up, but it's nothing more then a grey square. Nothing more. Is that all I am supposed to see ? Maybe I am just not getting what this function does. That might be my problem. Because I can just make a cube that is grey. So I do not understand why this is different.

https://soundcloud.com/toraktu

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Green Gandalf

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Posted: 14th Jul 2013 01:03

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Unless you put something interesting in the scene the cube maps will be empty and you need to apply the cube map to something.

It's just a cube map image and like any other image you need to apply it to something. The original poster said he'd removed all the irrelevant stuff so he could show the crash simply - which he did and I fixed. I assumed he knew what to do with it.

Anyway, have a look at the attached zipped project prepared by Lee and myself some time back. I thought it was in the Snippets project folder but it isn't - it might be in the Newsletter. The demo shows two ways of applying cube mapping to an object, i.e. to the statue in the demo. I've set the demo to use the Dark Shader method in this line:

+ Code Snippet

usingdarkshader=1

I think the Dark Shader method is simpler (it's certainly more flexible) - the pure DBPro solution works in this demo but has its own bug in other situations (reported in the Annoying Bugs thread).

The cube map consists of six camera shots of the entire scene and is used to give the statue a dynamically changing reflection.

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JackDawson

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Posted: 14th Jul 2013 18:29

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Is there any documentation on this ?

And thanks for the help. Your one of the Pillars of this community here.

https://soundcloud.com/toraktu

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Green Gandalf

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Posted: 14th Jul 2013 18:35

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Thanks.

Quote: "Is there any documentation on this ?"

Not really.

It's one of the more arcane aspects of DBPro.

If you have specific questions I (and others of course) can often help.

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JackDawson

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Posted: 14th Jul 2013 21:00

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I would just like to know every possible function and parameter of this. Because I never was able to use it do to lack of info, not to mention, never getting it to work before now.

https://soundcloud.com/toraktu

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Green Gandalf

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Posted: 14th Jul 2013 22:11

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Quote: "I would just like to know every possible function and parameter of this."

So would I.

There's a file around somewhere which gives the parameters for each Dark Shader command. I'll see if I can find it. It's not on the machine I'm using right now.

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Diablo 3D

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Posted: 15th Jul 2013 10:22

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Hi sorry for being a ghost all weekend...

This code works for me:

+ Code Snippet

reload display pointer

rem Initialise
sync on
sync rate 0

rem Load model and shader effect
load object "cube.dbo",1
autocam off
load effect "Reflection Mapping.dbs",1,1
set object effect 1,1

rem Make environment reflection cube map
Make Dynamic Cube Map 1,128
Apply Cube Map To Object 1,1,1

do
	hide object 1
	rem Update reflection texture
 rendering()	

	rem Draw main camera
	sync mask %001 : sync
loop


function rendering()
    Render Dynamic Cube Map 1,-1, Camera Position X(), Camera Position Y(), Camera Position Z()
    show object 1
ENDFUNCTION

Thank you Green Gandalf

Self Destruction Computer Entertainment

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JackDawson

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Posted: 15th Jul 2013 13:10

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Quote: "There's a file around somewhere which gives the parameters for each Dark Shader command. I'll see if I can find it. It's not on the machine I'm using right now."

OK sounds good. Thanks.

https://soundcloud.com/toraktu

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thenerd

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Posted: 15th Jul 2013 15:12

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Here, posted by Green Gandalf in this thread, I bet this is the file you're talking about.

*Reload Display Pointer  -  must be called after any "set display mode" calls

*Make Dynamic Cube Map <iID>, <size>, [mipmapped]  -  creates a cube map of the specified resolution valid ID = 1-10, optional mipmap parameter
*Delete Dynamic Cube Map <iID>  -  deletes a cubemap
*Render Dynamic Cube Map <iID>, <camera>, <x>, <y>, <z>  -  renders a cube map with a camera (-1 for temp camera) at a position
*Apply Cube Map To Object <objID>, <stage>, <iID>, [shader]  -  applies a cube map to an object stage, optional shader parameter, use shader=1 if using an object shader
*Dynamic Cube Map Exist( <iID> )  -  returns 1 if cube map exists

*Load Camera Effect <filename$>, <effectID>, <loadTex>  -  Loads a camera effect into an ID, separate from object effect IDs
*Delete Camera Effect <effectID>  -  delete a camera effect
*Camera Effect Exist <effectID>  -  returns 1 if effect exists
*Set Camera Effect ConstantFloat <effectID>, <varName>, <value>  -  set a float variable in a camera effect
*Set Camera Effect ConstantInt <effectID>, <varName>, <value>  -  set an integer variable in a camera effect
*Set Camera Effec ConstantVector <effectID>, <varName>, <vector>  -  set a float vector variable in a camera effect, uses dbvector4
*Set Camera Effect <camera>, <effect>, <image>  -  set an effect to a camera, and output to an image, this command will also take control of image 65499, only camera effects can be applied to cameras
*Remove CameraEffect <camera>  -  remove an effect from a camera
*Sync Camera <camera>  -  render a camera containing a camera effect, no other cameras synced, only output is to the image from "Set Camera Effect"

+ Code Snippet

*Reload Display Pointer  -  must be called after any "set display mode" calls

*Make Dynamic Cube Map <iID>, <size>, [mipmapped]  -  creates a cube map of the specified resolution valid ID = 1-10, optional mipmap parameter
*Delete Dynamic Cube Map <iID>  -  deletes a cubemap
*Render Dynamic Cube Map <iID>, <camera>, <x>, <y>, <z>  -  renders a cube map with a camera (-1 for temp camera) at a position
*Apply Cube Map To Object <objID>, <stage>, <iID>, [shader]  -  applies a cube map to an object stage, optional shader parameter, use shader=1 if using an object shader
*Dynamic Cube Map Exist( <iID> )  -  returns 1 if cube map exists

*Load Camera Effect <filename$>, <effectID>, <loadTex>  -  Loads a camera effect into an ID, separate from object effect IDs
*Delete Camera Effect <effectID>  -  delete a camera effect
*Camera Effect Exist <effectID>  -  returns 1 if effect exists
*Set Camera Effect ConstantFloat <effectID>, <varName>, <value>  -  set a float variable in a camera effect
*Set Camera Effect ConstantInt <effectID>, <varName>, <value>  -  set an integer variable in a camera effect
*Set Camera Effec ConstantVector <effectID>, <varName>, <vector>  -  set a float vector variable in a camera effect, uses dbvector4
*Set Camera Effect <camera>, <effect>, <image>  -  set an effect to a camera, and output to an image, this command will also take control of image 65499, only camera effects can be applied to cameras
*Remove CameraEffect <camera>  -  remove an effect from a camera
*Sync Camera <camera>  -  render a camera containing a camera effect, no other cameras synced, only output is to the image from "Set Camera Effect"

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Green Gandalf

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Posted: 15th Jul 2013 16:33

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That's the one. Thanks.

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JackDawson

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Posted: 15th Jul 2013 16:43

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That's exactly what I needed !! TY TY TY

https://soundcloud.com/toraktu

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DarkBASIC Professional Discussion / Problem with Dynamic Cube Map